diff --git a/hrms/hr/doctype/leave_application/leave_application.py b/hrms/hr/doctype/leave_application/leave_application.py
index c1ec44369a..92bece1cd3 100755
--- a/hrms/hr/doctype/leave_application/leave_application.py
+++ b/hrms/hr/doctype/leave_application/leave_application.py
@@ -490,7 +490,7 @@ def validate_leave_overlap(self):
 		for d in frappe.db.sql(
 			"""
 			select
-				name, leave_type, posting_date, from_date, to_date, total_leave_days, half_day_date
+				name, leave_type, posting_date, from_date, to_date, total_leave_days, half_day, half_day_date
 			from `tabLeave Application`
 			where employee = %(employee)s and docstatus < 2 and status in ('Open', 'Approved')
 			and to_date >= %(from_date)s and from_date <= %(to_date)s
@@ -505,6 +505,7 @@ def validate_leave_overlap(self):
 		):
 			if (
 				cint(self.half_day) == 1
+				and cint(d.half_day) == 1
 				and getdate(self.half_day_date) == getdate(d.half_day_date)
 				and (
 					flt(self.total_leave_days) == 0.5
diff --git a/hrms/hr/doctype/leave_application/test_leave_application.py b/hrms/hr/doctype/leave_application/test_leave_application.py
index a2e3e5a64e..25884341a5 100644
--- a/hrms/hr/doctype/leave_application/test_leave_application.py
+++ b/hrms/hr/doctype/leave_application/test_leave_application.py
@@ -483,6 +483,39 @@ def test_overlap_with_half_day_3(self):
 		application.half_day_date = "2013-01-05"
 		application.insert()
 
+	def test_overlap_with_half_day_on_today(self):
+		self._clear_roles()
+
+		from frappe.utils.user import add_role
+
+		add_role("test@example.com", "Employee")
+		frappe.set_user("test@example.com")
+
+		# allocate leave covering today so the applications aren't rejected for
+		# being outside the allocation period
+		date = getdate()
+		make_allocation_record(
+			employee=get_employee().name,
+			leave_type="_Test Leave Type",
+			from_date=get_year_start(date),
+			to_date=get_year_ending(date),
+		)
+
+		# full day leave on today (half_day_date stays NULL)
+		application = self.get_application(self.leave_application)
+		application.from_date = application.to_date = nowdate()
+		application.insert()
+
+		# half day leave on the same day must overlap regardless of the date:
+		# a NULL half_day_date on the existing full day leave coerces to today via
+		# getdate(None), so the date must not be the only thing distinguishing them
+		application = self.get_application(self.leave_application)
+		application.from_date = application.to_date = nowdate()
+		application.half_day = 1
+		application.half_day_date = nowdate()
+
+		self.assertRaises(OverlapError, application.insert)
+
 	@assign_holiday_list("Salary Slip Test Holiday List", "_Test Company")
 	def test_optional_leave(self):
 		leave_period = get_leave_period(current=True)